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Standard Practice for Evaluating the Effects of Heat on Asphalts
Automaticky přeložený název:
Standardní praxe pro posouzení účinků tepla na asfalty
NORMA vydána dne 1.1.2004
Označení normy: ASTM D3791-04
Poznámka: NEPLATNÁ
Datum vydání normy: 1.1.2004
Kód zboží: NS-24887
Počet stran: 2
Přibližná hmotnost: 6 g (0.01 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM
Keywords:
asphalts, heat exposure, overheated, physical property changes, ICS Number Code 91.100.50 (Binders. Sealing materials)
Significance and Use | ||||||||||||||||||
When asphalts are maintained at elevated temperatures in the presence of air, their characteristics may change. Certain blown asphalts also soften when maintained near, and particularly above, their final blowing temperatures under virtually air-free conditions. This may happen if the asphalt is overheated for application purposes. This practice provides a uniform heat-treatment procedure and methods for evaluating the effect of this treatment on some of the characteristics of asphalts. Changes observed when asphalts are overheated are not indicative of changes to be expected when asphalts are heated to normal application temperatures. |
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1. Scope | ||||||||||||||||||
1.1 This practice covers a procedure for evaluating some of the effects on asphalts of heating in the presence of little or no air. 1.2 This standard does not purport to address the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. |
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2. Referenced Documents | ||||||||||||||||||
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